body {
  /*background-image: url(../picture/14.png);*/
  background-size: auto;
  font-size: 17px;
  font-family: "幼圆";
  background-image: url(../picture/19.jpg);
  background-repeat: no-repeat;
  /*  text-align: center;*/
  /*color: #00F;*/
}

.register {

  width: 800px;
  height: 600px;
  margin: 200px auto;
  border: 1px;
  background-color: rgba(0, 0, 0, 0.3);
  padding: 1px;
  position: relative;
  background-image: url(../picture/18.gif);
  opacity: 0.8;
}

.bottom {
  text-align: center;
  color: #fff;
  margin-bottom: 100px;
}